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https://issues.apache.org/jira/browse/QPID-8581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17532796#comment-17532796
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ASF GitHub Bot commented on QPID-8581:
--------------------------------------
dakirily commented on code in PR #121:
URL: https://github.com/apache/qpid-broker-j/pull/121#discussion_r866737563
##########
broker-plugins/broker-query-engine/src/main/java/org/apache/qpid/server/query/engine/evaluator/EvaluationContext.java:
##########
@@ -0,0 +1,154 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.qpid.server.query.engine.evaluator;
+
+import java.util.Deque;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.LinkedBlockingDeque;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.apache.qpid.server.query.engine.parsing.expression.Expression;
+import org.apache.qpid.server.query.engine.parsing.query.QueryExpression;
+
+/**
+ * Holds temporary values needed during query evaluation
+ */
+@SuppressWarnings({"java:S116", "unchecked"})
+public class EvaluationContext
+{
+ public static final String BROKER = "broker";
+
+ public static final String STATISTICS = "statistics";
+
+ public static final String QUERY_AGGREGATED_RESULT =
"query.aggregated.result";
+
+ public static final String QUERY_ALIASES = "query.aliases";
+
+ public static final String QUERY_DATETIME_PATTERN_OVERRIDEN =
"query.datetime.pattern.overriden";
+
+ public static final String QUERY_DEPTH = "query.depth";
+
+ public static final String QUERY_ORDERING = "query.ordering";
+
+ public static final String QUERY_ITEMS_FOR_REMOVAL =
"query.items.for.removal";
+
+ public static final String QUERY_ORDER_ITEMS_FOR_REMOVAL =
"query.order.items.for.removal";
+
+ public static final String QUERY_SETTINGS = "query.settings";
+
+ public static final String COMPARATORS = "comparators";
+
+ private final Map<Object, Object> _values = new HashMap<>();
Review Comment:
HashMap was replaced with ConcurrentHashMap
> [Broker-J] Broker-J Query REST API improvements
> -----------------------------------------------
>
> Key: QPID-8581
> URL: https://issues.apache.org/jira/browse/QPID-8581
> Project: Qpid
> Issue Type: Improvement
> Components: Broker-J
> Affects Versions: qpid-java-broker-8.0.6
> Reporter: Daniil Kirilyuk
> Priority: Minor
>
> Existing broker REST API (including broker query API) doesn’t support such
> functions as aggregation, grouping and using nested logical operators, which
> could be useful for gathering broker statistics and reporting.
> We suggest to add a new POST method for the endpoint /api/latest/querybroker
> and supply search criteria using JSON body. (Existing GET method
> implementation should stay without changes for keeping backwards
> compatibility and because of difficulties of parsing complicated search
> conditions from URI parameters when using GET request method).
> The new functionality should add
> * logical OR operator (absent in current API)
> * aggregation operators AVG, CNT, MAX, MIN, SUM
> * grouping aggregation
> * new numeric / datetime / string functions
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